win_xorist_auto

YARA detection rule by Felix Bilstein - yara-signator at cocacoding dot com

Detects win.xorist.

rule win_xorist_auto {

    meta:
        author = "Felix Bilstein - yara-signator at cocacoding dot com"
        date = "2026-09-17"
        version = "1"
        description = "Detects win.xorist."
        info = "autogenerated rule brought to you by yara-signator"
        tool = "yara-signator v0.6.0"
        signator_config = "callsandjumps;datarefs;binvalue"
        malpedia_reference = "https://malpedia.caad.fkie.fraunhofer.de/details/win.xorist"
        malpedia_rule_date = "20260916"
        malpedia_hash = "53a643781c18e08f4a50949af60172d837a0b6f6"
        malpedia_version = "20260917"
        malpedia_license = "CC BY-SA 4.0"
        malpedia_sharing = "TLP:WHITE"

    


    strings:
        $sequence_0 = { eb03 8b7102 8d442418 3bf8 7507 8bc6 e9???????? }
                                                                                                
        $sequence_1 = { 8b442414 8bce 035318 2bc5 83c608 8911 }
                                                                                    
        $sequence_2 = { 6af5 ff15???????? 894304 56 57 bf00400000 8364241000 }
                                                                                                
        $sequence_3 = { 884500 83ff01 0f8657fdffff 8a4301 884501 83ff02 0f8648fdffff }
                                                                                                
        $sequence_4 = { 8a80a0404400 88442445 8bc6 c1e810 0fb6c0 }
                                                                        
        $sequence_5 = { 7505 84c0 7501 47 33db 83c602 66395efe }
                                                                                                
        $sequence_6 = { ffd6 8b471c 8d4df8 51 68???????? 50 8b30 }
                                                                                                
        $sequence_7 = { 8d4d30 8bf0 e8???????? 8bc8 0bca 0f842a060000 }
                                                                                    
        $sequence_8 = { 8b44241c 83c40c 50 e8???????? 55 894760 e8???????? }
                                                                                                
        $sequence_9 = { 894130 834948ff c20800 8b442404 894114 8b442408 c6410c01 }
                                                                                                
    condition:
        7 of them and filesize < 1402880
}

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

42fc44f5-5508-4829-961c-8c1b87967235

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Executable code, not a declarative rule

This submission is arbitrary [[ currentRule.format ? currentRule.format.toUpperCase() : '' ]] code, not a declarative detection rule — review it as you would any script before running it, and note that it cannot be safely aggregated or auto-executed alongside YARA/Sigma/Suricata/CRS rules.

Rejected pattern present

[[ reason ]]

What does this mean?

Format & documentation suggestions

Not a security issue — this rule is valid and was accepted as-is. These are optional fields/conventions its own format recommends, mainly affecting its quality score and how well it documents itself for other reviewers.

[[ reason ]]

What do these messages mean?

[[ currentRule.title && currentRule.title.length > 60 ? currentRule.title.slice(0, 60) + '…' : currentRule.title ]]

[[ currentRule.title ]]

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